Definitions Flashcards
(26 cards)
Define caution notice
A notice conveying a warning against interference Which shall be attached to all points of isolation
Define charged
- at a voltage when isolated from the system by induction
- or retained charge due to capacitive effects
Define dead
Not electrically live or charged
Define an earthing device
Primary earth
- type registered fixed or portable earthing device applied to electrical conductor
To protect against inadvertent energisation.
Drain earth
- type registered fixed or portable applied to electrical equipment for the purpose of protection against charged equipment and managing circulating currents.
Define general safety
The provision and maintenance of - safe access to and from the place of work
- a safe place of work
- a safe working environment
- safe systems of work
- correct use of PPE
Define isolated
- disconnected from associated equipment by an isolation device to the isolating position.
Or
- adequate physical separation which shall ensure the isolation gap cannot fail electrically.
Define control key
Key for operating the control lock of a key safe
Define Safety key
- key unique at the location for locking an isolation device/ earthing device/ drain or vent device /valve
Define key safe key
Key unique at the location for operating a lock other than the control lock on a key safe.
Define key safe
A lockable device for the secure retention of keys links and fuses
Define live
At a voltage by being connected to a source of electricity.
Define person
An individual with sufficient knowledge and experience to avoid danger
Define competent person
Person who appointed by an appropriate officer of the company to carry out duties
- specified in writing
- including receipt, transfer and clearance of safety documents
Define authorised person
Person who has been appointed by an appropriate officer of the company to carry out duties to carry out
- operational and safety switching duties as specified in writing
Define point of isolation
- a point at which equipment has been isolated and WP,
- and in the case of LV equipment WRP the isolation point immobilised and locked.
- caution notices shall be attached at all points of isolation.
Define a card safe
A lockable device for the secure retention of safety documents and associated key safe keys
Defined locked
A condition of equipment that cannot be altered without the operation of a secure fastening device.
Define control person operation
An individual appointed by an appropriated officer of the company or other companies to be responsible for
- operation control and coordination of the system within and across defined boundaries
- they can also transfer temporary control of a part of HV SYSTEM using a system state certificate (SSC)
Define a control person safety
An individual appointed by an appropriated officer of the company or other companies to be responsible for
- controlling and coordinating safety activities necessary to achieve safety from the system with and across defined boundaries.
- they can also receive temporary control of a part of HV SYSTEM using a system state certificate (SSC)
Define safety distance
The distance from the nearest HV exposed conductor, or from an insulator support HV conductor.
Which shall be maintained to avoid danger.
What is local supervision
Level of supervison whereby the Nominated personnel is
- available at the location where the work is being carried out
- and able to attend the point of work as necessary.
What is personal supervision
Level of supervison whereby the nominated personnel is
- continuously observing and in the presence of individuals with the ability to directly intervene.
What is safety from the system
Condition which safeguards people from the inherent dangers of working on or near to equipment
What is earthed
Connected to earth by means of earthing device
